Crystal Palace Park, London 1

The roadshow is at Crystal Palace Park in south east London, where highlights include a diamond ring found wrapped up in a sock, a Louis Vuitton trunk and a surprise visit from a living artist.

Will Farmer is delighted to see a pair of majolica whippets, while Jon Baddeley is stunned to discover a rare sundial by Thomas Tuttell that dates back to the end of the 17th century.

Lee Young is intrigued by a trio of bronze Chinese censers bought from a flea market, while Ronnie Archer Morgan discovers clothing and correspondence with a direct link to Ethiopian ruler Haile Selassie.

Fiona Bruce meets cartoonist Ralph Steadman, best known for his work with maverick American journalist Dr Hunter S Thompson, while Mark Smith challenges Fiona to identify secret Second World War spy gadgets concealed in everyday items.

Clare Tole-Moir is thrilled to see a rare DIY kit dress by fashion designer Paco Rabanne, while John Foster admires a jointed wooden artist’s model with a surprising value.